/* ========================================
   REFRI LICONA DE LA COSTA - DESIGN SYSTEM
   ======================================== */

:root {
  /* Colors - Cool refrigeration theme */
  --primary-blue: #0099FF;
  --primary-dark: #0066CC;
  --primary-light: #33AAFF;
  --ice-blue: #B3E5FC;
  --frost-blue: #E1F5FE;
  --navy: #001F3F;
  --silver: #C0C0C0;
  --dark-gray: #1a1a1a;
  --medium-gray: #333333;
  --light-gray: #f5f5f5;
  --white: #ffffff;
  --accent-cyan: #00D4FF;
  --accent-turquoise: #00CED1;

  /* Gradients */
  --gradient-primary: linear-gradient(135deg, var(--primary-blue) 0%, var(--primary-dark) 100%);
  --gradient-ice: linear-gradient(135deg, var(--ice-blue) 0%, var(--frost-blue) 100%);
  --gradient-dark: linear-gradient(135deg, var(--navy) 0%, var(--medium-gray) 100%);
  --gradient-accent: linear-gradient(135deg, var(--accent-cyan) 0%, var(--accent-turquoise) 100%);

  /* Typography */
  --font-primary: 'Poppins', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-secondary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;

  /* Spacing */
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 2rem;
  --spacing-lg: 3rem;
  --spacing-xl: 4rem;
  --spacing-xxl: 6rem;

  /* Border Radius */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-xl: 30px;

  /* Shadows */
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.1);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.15);
  --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.2);
  --shadow-glow: 0 0 20px rgba(0, 153, 255, 0.3);

  /* Transitions */
  --transition-fast: 0.2s ease;
  --transition-normal: 0.3s ease;
  --transition-slow: 0.5s ease;
}

/* ========================================
   RESET & BASE STYLES
   ======================================== */

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-secondary);
  color: var(--medium-gray);
  background-color: var(--white);
  line-height: 1.6;
  overflow-x: hidden;
}

h1,
h2,
h3,
h4,
h5,
h6 {
  font-family: var(--font-primary);
  font-weight: 700;
  line-height: 1.2;
  color: var(--navy);
}

h1 {
  font-size: clamp(2.5rem, 5vw, 4rem);
}

h2 {
  font-size: clamp(2rem, 4vw, 3rem);
}

h3 {
  font-size: clamp(1.5rem, 3vw, 2rem);
}

h4 {
  font-size: clamp(1.25rem, 2.5vw, 1.5rem);
}

p {
  font-size: clamp(1rem, 1.5vw, 1.125rem);
  margin-bottom: var(--spacing-sm);
}

a {
  text-decoration: none;
  color: inherit;
  transition: var(--transition-normal);
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

/* ========================================
   NAVIGATION
   ======================================== */

.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  box-shadow: var(--shadow-md);
  z-index: 1000;
  transition: var(--transition-normal);
}

.navbar.scrolled {
  background: rgba(255, 255, 255, 0.98);
  box-shadow: var(--shadow-lg);
}

.nav-container {
  max-width: 1400px;
  margin: 0 auto;
  padding: var(--spacing-sm) var(--spacing-md);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo-container {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.logo {
  height: 60px;
  width: auto;
  transition: var(--transition-normal);
}

.logo:hover {
  transform: scale(1.05);
}

.brand-name {
  font-family: var(--font-primary);
  font-size: 1.5rem;
  font-weight: 700;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.nav-menu {
  display: flex;
  list-style: none;
  gap: var(--spacing-md);
  align-items: center;
}

.nav-link {
  font-weight: 500;
  color: var(--navy);
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: var(--radius-sm);
  transition: var(--transition-normal);
  position: relative;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 0;
  height: 2px;
  background: var(--gradient-primary);
  transition: var(--transition-normal);
}

.nav-link:hover::after,
.nav-link.active::after {
  width: 80%;
}

.nav-link:hover {
  color: var(--primary-blue);
}

.nav-link.active {
  color: var(--primary-blue);
  font-weight: 600;
}

.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--spacing-xs);
}

.menu-toggle span {
  width: 25px;
  height: 3px;
  background: var(--navy);
  border-radius: 2px;
  transition: var(--transition-normal);
}

/* ========================================
   HERO SECTION
   ======================================== */

.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
  padding: var(--spacing-xxl) var(--spacing-md);
  background: var(--gradient-dark);
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: url('data:image/svg+xml,<svg width="100" height="100" xmlns="http://www.w3.org/2000/svg"><defs><pattern id="grid" width="100" height="100" patternUnits="userSpaceOnUse"><path d="M 100 0 L 0 0 0 100" fill="none" stroke="rgba(0,153,255,0.1)" stroke-width="1"/></pattern></defs><rect width="100%" height="100%" fill="url(%23grid)"/></svg>');
  opacity: 0.3;
}

.hero-content {
  max-width: 1400px;
  width: 100%;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-xl);
  align-items: center;
  position: relative;
  z-index: 1;
}

.hero-text h1 {
  color: var(--white);
  margin-bottom: var(--spacing-md);
  animation: fadeInUp 0.8s ease;
}

.hero-text .highlight {
  background: var(--gradient-accent);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-text p {
  color: var(--ice-blue);
  font-size: 1.25rem;
  margin-bottom: var(--spacing-lg);
  animation: fadeInUp 0.8s ease 0.2s backwards;
}

.hero-buttons {
  display: flex;
  gap: var(--spacing-sm);
  flex-wrap: wrap;
  animation: fadeInUp 0.8s ease 0.4s backwards;
}

.hero-image {
  position: relative;
  animation: fadeInRight 0.8s ease 0.3s backwards;
}

.hero-image img {
  width: 100%;
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-lg);
}

/* ========================================
   BUTTONS
   ======================================== */

.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-xs);
  padding: 1rem 2rem;
  border-radius: var(--radius-md);
  font-weight: 600;
  font-size: 1rem;
  cursor: pointer;
  border: none;
  transition: var(--transition-normal);
  position: relative;
  overflow: hidden;
}

.btn::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 0;
  height: 0;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.2);
  transform: translate(-50%, -50%);
  transition: width 0.6s, height 0.6s;
}

.btn:hover::before {
  width: 300px;
  height: 300px;
}

.btn-primary {
  background: var(--gradient-primary);
  color: var(--white);
  box-shadow: var(--shadow-md);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg), var(--shadow-glow);
}

.btn-secondary {
  background: transparent;
  color: var(--white);
  border: 2px solid var(--white);
}

.btn-secondary:hover {
  background: var(--white);
  color: var(--primary-blue);
  transform: translateY(-2px);
}

.btn-outline {
  background: transparent;
  color: var(--primary-blue);
  border: 2px solid var(--primary-blue);
}

.btn-outline:hover {
  background: var(--primary-blue);
  color: var(--white);
  transform: translateY(-2px);
}

/* ========================================
   SECTIONS
   ======================================== */

.section {
  padding: var(--spacing-xxl) var(--spacing-md);
  position: relative;
}

.section-light {
  background: var(--white);
}

.section-dark {
  background: var(--light-gray);
}

.container {
  max-width: 1400px;
  margin: 0 auto;
}

.section-header {
  text-align: center;
  margin-bottom: var(--spacing-xl);
}

.section-title {
  margin-bottom: var(--spacing-sm);
  position: relative;
  display: inline-block;
}

.section-title::after {
  content: '';
  position: absolute;
  bottom: -10px;
  left: 50%;
  transform: translateX(-50%);
  width: 80px;
  height: 4px;
  background: var(--gradient-primary);
  border-radius: 2px;
}

.section-subtitle {
  color: var(--medium-gray);
  font-size: 1.125rem;
  max-width: 700px;
  margin: var(--spacing-md) auto 0;
}

/* ========================================
   CARDS
   ======================================== */

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--spacing-md);
  margin-top: var(--spacing-lg);
}

.card {
  background: var(--white);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  box-shadow: var(--shadow-sm);
  transition: var(--transition-normal);
  position: relative;
  overflow: hidden;
}

.card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: var(--gradient-primary);
  transform: scaleX(0);
  transition: var(--transition-normal);
}

.card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-lg);
}

.card:hover::before {
  transform: scaleX(1);
}

.card-icon {
  width: 80px;
  height: 80px;
  background: var(--gradient-ice);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2.5rem;
  margin-bottom: var(--spacing-md);
  transition: var(--transition-normal);
}

.card:hover .card-icon {
  transform: scale(1.1) rotate(5deg);
}

.card-title {
  font-size: 1.5rem;
  margin-bottom: var(--spacing-sm);
  color: var(--navy);
}

.card-description {
  color: var(--medium-gray);
  margin-bottom: var(--spacing-md);
}

/* ========================================
   FOOTER
   ======================================== */

.footer {
  background: var(--gradient-dark);
  color: var(--white);
  padding: var(--spacing-xl) var(--spacing-md) var(--spacing-md);
}

.footer-content {
  max-width: 1400px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--spacing-lg);
  margin-bottom: var(--spacing-lg);
}

.footer-section h3 {
  color: var(--white);
  margin-bottom: var(--spacing-md);
}

.footer-section p,
.footer-section a {
  color: var(--ice-blue);
  margin-bottom: var(--spacing-xs);
  display: block;
}

.footer-section a:hover {
  color: var(--accent-cyan);
  padding-left: 5px;
}

.social-links {
  display: flex;
  gap: var(--spacing-sm);
  margin-top: var(--spacing-md);
}

.social-link {
  width: 40px;
  height: 40px;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition-normal);
}

.social-link:hover {
  background: var(--primary-blue);
  transform: translateY(-3px);
}

.footer-bottom {
  text-align: center;
  padding-top: var(--spacing-md);
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  color: var(--ice-blue);
}

/* ========================================
   WHATSAPP BUTTON
   ======================================== */

.whatsapp-float {
  position: fixed;
  bottom: 30px;
  right: 30px;
  width: 60px;
  height: 60px;
  background: #25D366;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-lg);
  z-index: 999;
  transition: var(--transition-normal);
  animation: pulse 2s infinite;
}

.whatsapp-float:hover {
  transform: scale(1.1);
  box-shadow: 0 8px 32px rgba(37, 211, 102, 0.4);
}

.whatsapp-float svg {
  width: 35px;
  height: 35px;
  fill: white;
}

/* ========================================
   ANIMATIONS
   ======================================== */

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeInRight {
  from {
    opacity: 0;
    transform: translateX(30px);
  }

  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes pulse {

  0%,
  100% {
    transform: scale(1);
  }

  50% {
    transform: scale(1.05);
  }
}

/* ========================================
   RESPONSIVE DESIGN
   ======================================== */

@media (max-width: 968px) {
  .hero-content {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .hero-buttons {
    justify-content: center;
  }

  .nav-menu {
    position: fixed;
    top: 80px;
    left: -100%;
    flex-direction: column;
    background: rgba(255, 255, 255, 0.98);
    width: 100%;
    padding: var(--spacing-lg);
    box-shadow: var(--shadow-lg);
    transition: var(--transition-normal);
  }

  .nav-menu.active {
    left: 0;
  }

  .menu-toggle {
    display: flex;
  }

  .card-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 640px) {
  .hero {
    padding: var(--spacing-xl) var(--spacing-sm);
    min-height: auto;
    padding-top: 100px;
  }

  .section {
    padding: var(--spacing-lg) var(--spacing-sm);
  }

  .hero-text h1 {
    font-size: 2rem;
    word-wrap: break-word;
  }

  .hero-buttons {
    flex-direction: column;
    width: 100%;
    gap: var(--spacing-sm);
  }

  .btn {
    width: 100%;
    justify-content: center;
  }

  .section-header h2 {
    font-size: 1.8rem;
  }
}